It doesn't say what cells are used. But, it does state an 80amp continuous discharge, which suggests that this pack most likely uses good cells. That's nice that it does use battery bars and not thin nickel strips...
SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz